Just Gambling
Just Gambling! is a standalone gacha system mod for The Binding of Isaac, featuring item pools, pity mechanics, gacha animations, result displays, and publicly listed pull rates.
The mod runs without any additional dependencies.
If you install the related “Repentogon” extensions, it can additionally fix a vanilla issue where Challenge Rooms fail to trigger, but this is entirely optional.
Supports Mod Config Menu.
Supports mouse input and FULL CONTROLLER SUPPORT.
On controller, press RT to view detailed pool descriptions.
On keyboard, press H to view the same information.
Use the console command:
to enable or disable the mod.
Use the console command:
to toggle whether other naturally spawned generic pickups are converted.
Quality 4 items: 1%
Quality 3 items: 4%
Quality 2 items: 10%
Quality 1 items: 15%
Quality 0 items: 10%
Pickups: 60%
Pity System:
After 50 consecutive pulls without obtaining a Quality 4 item, each subsequent pull increases the Quality 4 rate by 2% until one is obtained.
Additional Guarantee:
Within every 10 pulls, at least one result is guaranteed to be a non-drop item.
Item pools are not fully displayed at all times.
Instead, available pools are determined by the current game seed and progression.
Each run displays:
• 1 Newbie Pool
• 3 Permanent Pools
• 2 Rotating Pools (rotated per chapter)
Newbie Pool (NEWBIE)
Contains only items from Rebirth.
Has a limited number of pulls and a one-time guaranteed Quality 4 item.
Featured UP Pools (ELECTRIC / KNIFE / etc.)
Themed pools with increased appearance rates for specific item categories, such as technology, blades, Devil-related items, and other focused directions.
Filtered Pools (LILITH / SELECT)
Pools with restricted item lists, such as Baby Shop–only items or selected Quality 3 / Quality 4 items.
Mixed Pool (NEWYEAR)
A mixed-type pool.
The first Quality 4 item obtained is guaranteed to be a Quality 4 item that has not been collected in the current save file (once only).
Some items receive special handling to ensure proper behavior within the gacha system, including:
• Damocles
• Flip
• There’s Options
• More Options
These items are adjusted to avoid invalid states or unintended interactions when obtained via draws.
• Full gacha UI and result presentation
• Seed-based dynamic pool availability
• Multiple item pools with independent draw logic
• Publicly listed rates and pity mechanics
• 10-pull non-drop guarantee
• Mouse and full controller support
• Mod Config Menu and console command support
• Mod compatibility interfaces for extensions and add-ons
Yeah, Repentance+ kind of broke this.
Toggles the mod on or off.
Required DLC:
These DLC should be installed in order to use this item.
The Binding of Isaac: Repentance
The Binding of Isaac: Afterbirth
The Binding of Isaac: Afterbirth+
Revisions:
Old revisions of this mod are available below. Click the link to download.
